Why are packages being held back

[Terence Simpson]

Douglas Phillipson wrote:
> When doing apt-get upgrade I get the message:
>
> The following packages have been kept back:
>   hal istanbul
> 0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.
>
> Why is this happening?  Are these possibly broken packages or something?
>
> Thanks
>
> Doug P
>
>   
Whenever the upgrade of a package requires the installation/removal of 
another package it's "held back" when you run apt-get upgrade. The way 
to get it to work is to run apt-get dist-upgrade

Terence